source/partcache.cpp

   1 #include "part.h"
   2 #include "partcache.h"
   3
   4 using namespace std;
   5
   6 namespace Msp {
   7 namespace GLtk {
   8
   9 CachedPart::CachedPart():
  10         part(0),
  11         texture(0),
  12         mesh(0)
  13 { }
  14
  15 CachedPart::~CachedPart()
  16 {
  17         delete mesh;
  18 }
  19
  20
  21 void PartCache::begin_rebuild()
  22 {
  23         next = parts.begin();
  24         current = parts.end();
  25 }
  26
  27 void PartCache::insert_special(const Part &part)
  28 {
  29         if(part.get_name().empty())
  30                 throw invalid_argument("PartCache::insert_special");
  31
  32         for(current=next; current!=parts.end(); ++current)
  33                 if(current->part==&part)
  34                 {
  35                         parts.erase(next, current);
  36                         break;
  37                 }
  38
  39         if(current==parts.end())
  40                 current = parts.insert(next, CachedPart());
  41         else
  42                 *current = CachedPart();
  43         current->part = &part;
  44
  45         next = current;
  46         ++next;
  47 }
  48
  49 GL::Mesh &PartCache::create_mesh(const Part &part, const GL::Texture2D &tex)
  50 {
  51         if(current!=parts.end() && current->texture==&tex)
  52                 return *current->mesh;
  53
  54         for(current=next; current!=parts.end(); ++current)
  55                 if(current->texture==&tex)
  56                 {
  57                         parts.erase(next, current);
  58                         break;
  59                 }
  60
  61         if(current==parts.end())
  62         {
  63                 current = parts.insert(next, CachedPart());
  64                 current->texture = &tex;
  65                 current->mesh = new GL::Mesh((GL::TEXCOORD2, GL::COLOR4_UBYTE, GL::VERTEX2));
  66         }
  67         else
  68                 current->mesh->clear();
  69         current->part = &part;
  70
  71         next = current;
  72         ++next;
  73
  74         return *current->mesh;
  75 }
  76
  77 void PartCache::end_rebuild()
  78 {
  79         parts.erase(next, parts.end());
  80 }
  81
  82 } // namespace GLtk
  83 } // namespace Msp